# ICW1117-3.3V

**ICW** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

ICW1117-3.3V from ICW, in a SOT-89. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Ground pin on the fixed-output 3.3V version (labelled ADJ/GND; it is the ADJ pin on the adjustable version), and the ground return of the regulator. |
| 2 | VOUT | power_out | Regulated 3.3V output (3.234 V to 3.366 V, up to 1A) that needs an output capacitor to GND with ESR no greater than 0.5 ohm, and is also electrically connected to the package tab. |
| 3 | VIN | power_in | Supply input, operating range up to 15 V typical with an absolute maximum of 18 V, where an input bypass capacitor of 10 uF is recommended. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | ICW |
| Package | SOT-89 |
| Category | Power Management (PMIC) |
| Pins | 3 |

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Input voltage | Vin |  | 15 | 18 | V |  | 3 |
| Output voltage (TX1117-3.3V) | Vout | 3.234 | 3.3 | 3.366 | V | 0≤Iout≤1A, Vin=4.6V | 3 |
| Line regulation (TX1117-3.3V) | △Vout |  | 9 | 49 | mV | Iout=10mA, 4.6V≤Vin≤12V | 4 |
| Load regulation (TX1117-3.3) | △Vout |  | 10 | 40 | mV | Vin =4.6V, 10mA≤Iout≤1A | 4 |
| Dropout voltage | Vdrop |  | 1.15 | 1.3 | V | Iout =100mA | 5 |
| Dropout voltage | Vdrop |  | 1.3 | 1.5 | V | Iout=1A | 5 |
| Quiescent current (TX1117-3.3V) | Iq |  | 2 | 5 | mA | Vin=12V | 5 |
| Maximum input voltage |  |  |  | 18 | V |  | 3 |
| Maximum operating junction temperature (Tj) | Tj |  |  | 150 | ℃ |  | 3 |
| Storage temperature | Ts | -55 |  | 150 | ℃ |  | 3 |
| Lead temperature and time |  |  |  | 260 | ℃ | 10S | 3 |
| Ambient operating temperature |  | -40 |  | 85 | ℃ | Ambient temperature (from Features list) | 2 |
| Junction temperature for guaranteed operation |  |  |  | 125 | ℃ | Guaranteed maximum junction temperature | 7 |
| Output capacitor ESR | ESR |  |  | 0.5 | Ω | Output capacitor, must not exceed | 7 |

## CAD (KiCad official)

- Symbol: `ICW1117-3.3V`
- Footprint: `Package_TO_SOT_SMD:SOT-89-3`
- 3D model: SOT-89 (KiCad packages3D, STEP)
- 3D model files: `icw1117-3-3v-etched.step` / `icw1117-3-3v-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `icw1117-3-3v.step` / `icw1117-3-3v.glb` are the bare package body.

## Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

- **Datasheet:** [ICW datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603152368552849408) (10 pp, sha256 `0db1c8f8d01a07d1`, retrieved 2026-10-18, tier: lcsc)
- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/icw1117-3-3v-datasheet.pdf)